 |
| screw coupling: 22 phrases in 13 subjects |
| Automated equipment | 1 |
| Construction | 1 |
| Electronics | 1 |
| Firefighting and fire-control systems | 2 |
| Machinery and mechanisms | 1 |
| Mechanic engineering | 4 |
| Nautical | 1 |
| Oil / petroleum | 1 |
| Oil and gas technology | 1 |
| Oilfields | 1 |
| Pipelines | 1 |
| Rail transport | 1 |
| Technology | 6 |